EP0319662A2 - Tête de broche - Google Patents

Tête de broche Download PDF

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Publication number
EP0319662A2
EP0319662A2 EP88116257A EP88116257A EP0319662A2 EP 0319662 A2 EP0319662 A2 EP 0319662A2 EP 88116257 A EP88116257 A EP 88116257A EP 88116257 A EP88116257 A EP 88116257A EP 0319662 A2 EP0319662 A2 EP 0319662A2
Authority
EP
European Patent Office
Prior art keywords
spindle
head according
spindle head
connecting element
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88116257A
Other languages
German (de)
English (en)
Other versions
EP0319662B2 (fr
EP0319662B1 (fr
EP0319662A3 (en
Inventor
Franz Kumnig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hellmerich Werkzeugmaschinen Gesmbh
Original Assignee
Hellmerich Werkzeugmaschinen Gesmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6342415&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0319662(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hellmerich Werkzeugmaschinen Gesmbh filed Critical Hellmerich Werkzeugmaschinen Gesmbh
Priority to AT88116257T priority Critical patent/ATE74046T1/de
Publication of EP0319662A2 publication Critical patent/EP0319662A2/fr
Publication of EP0319662A3 publication Critical patent/EP0319662A3/de
Application granted granted Critical
Publication of EP0319662B1 publication Critical patent/EP0319662B1/fr
Publication of EP0319662B2 publication Critical patent/EP0319662B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
    • B23Q1/0027—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained
    • B23Q1/0036—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained one of those parts being a tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/04—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies allowing adjustment or movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q2039/002—Machines with twin spindles

Definitions

  • the invention relates to a spindle head, in particular a multi-spindle head, with an arrangement for supplying the respective drilling and / or cutting tools with coolant and / or lubricant, each spindle being provided with a continuous axial channel which opens into the tool holder and which is connected to that of the The free spindle end of the tool holder is connected via a connecting element to a coolant and / or lubricant source under a predeterminable pressure.
  • a spindle head of this type is known from DE-OS 34 01 079.
  • the coolant and / or lubricant is supplied to the axial channel provided in each spindle at the free spindle end removed from the tool holder either from a chamber into which the free spindle end protrudes or via a connecting element which rotates with the spindle and below Spring pressure is present at a connecting piece.
  • These known embodiments are relatively complex in construction and in particular with regard to the required seals and also require complicated assembly processes. At particularly high speeds, the known embodiments also leave something to be desired with regard to the achievable service life and the minimization of the leakage quantities.
  • the object of the invention is to provide a spindle head of the type specified at the same time, while at the same time simplifying construction and facilitating assembly, in such a way that a long service life is ensured, in particular even at the highest speeds, and a reduction in the pressurization of the sealing rings is achieved while minimizing leakages.
  • the gap seal is preferably designed as a return thread in such a way that when the spindle rotates, a conveying effect which is opposite to the direction of flow in the gap seal is achieved.
  • the pressure reduction desired in each case can be defined and optimally predetermined taking into account the pressure of the coolant and / or lubricant supplied.
  • the connecting element has a tubular section which engages in a cylindrical extension at the spindle end which runs coaxially to the axial channel of the spindle and has a larger diameter than the axial channel with little play.
  • a connection space is formed between the bottom of the cylindrical extension and the end of the tubular section engaging in this extension, the axial dimension of which is a multiple of the gap sealing dimension between the tubular section and the spindle end.
  • This configuration is favorable in terms of production technology, leads to simple assembly processes and is highly effective.
  • the connecting element can be designed as a screw element or element provided with a fastening flange, but it is equally possible to integrate this connecting element directly into the connecting housing and to carry it out in one piece with the spindle housing.
  • the spindle end is enclosed in the coupling area by two spaced sealing rings, a test bore opening into the area between the two sealing rings and at least one relief bore extending through the spindle housing opening in the area of the spindle end. Excess coolant and / or lubricant is removed or returned via the relief bore.
  • the test bore makes it possible to determine a possibly defective seal, since leakage of coolant and / or lubricant at the test bore is an indication that a seal change is necessary.
  • a spindle housing 4 shown in part, a plurality of spindles, the drive of which is not shown, are rotatable gert, and these spindles are provided with a continuous axial channel 6, via which coolant and / or lubricant is supplied to the respective drilling and / or cutting tools.
  • the supply of the coolant and / or lubricant coming from a pressurized source takes place via a coolant supply line 17 and bores 18 formed in the housing, which are each connected to a transverse bore 16 which is formed in a connecting element 11 which is provided with a gap seal 12 is coupled to the associated spindle 5 and has an axial channel 13, so that there is a continuous flow path between the coolant supply line 17 and the axial channel 6 in the spindle 5.
  • the connecting element 11 is arranged in a cylindrical housing bore, with its head part sealed with respect to the bore wall and provided with a tubular section 14 which, with the formation of the gap seal 12 already mentioned, extends into a cylindrical extension 15 at the spindle end 10 which runs coaxially with the axial channel 6 of the spindle 5 extends.
  • This cylindrical extension 15 has a larger diameter than the axial channel 6, and in the area of the gap seal 12, the outer diameter of the spindle end is preferably somewhat reduced, so that mutually spaced sealing rings 8 can be arranged without difficulty in the cylindrical bore which receives the head part of the connecting element 11 .
  • the mutually spaced sealing rings 8 are preferably PTFE-coated, and the running surface of the spindle end 10, which interacts with these sealing rings 8, is preferably coated with chromium oxide.
  • test bore 9 extends through the housing 4, by means of which it is possible to immediately determine whether a sealing ring is damaged, since in this case coolant and / or lubricant would leak out through the test bore 9.
  • the spindle 5 mounted at the end in a bearing 20 is accordingly connected via its axial channel 6 to a source of coolant and / or lubricant under comparatively high pressure in such a way that the sealing rings 8 are only slightly loaded with pressure, since it is a considerable one Gap seal 12 having longitudinal dimensions allows the pressure to be reduced to the desired extent. If the gap seal is designed with a return thread, pressure can be reduced in accordance with the respective requirements.
  • Coolant and / or lubricant emerging from the gap seal 12 at the free spindle end is discharged or returned via a relief bore 7.
  • the connecting element 11 is preferably provided in its head region with an annular groove 22 into which the transverse bore 18 opens. In this way, installation and positioning of the connecting element becomes absolutely uncritical, since no alignment processes are required.
  • connection element 11 can be screwed to the housing 4 or connected via a flange 19. In these cases, the connection element 11 is assembled from the rear of the housing, but it is also possible to work with a housing which is closed at the end, as indicated by reference number 21, and to insert the connection element from the spindle side into the corresponding receiving bore.
  • connection element which is expediently made of bronze, is particularly easily accessible from the outside in the case of attachment via a screw or flange connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Drilling And Boring (AREA)
  • Gripping On Spindles (AREA)
  • Turning (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
EP88116257A 1987-12-11 1988-09-30 Tête de broche Expired - Lifetime EP0319662B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116257T ATE74046T1 (de) 1987-12-11 1988-09-30 Spindelkopf.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3742094A DE3742094C2 (de) 1987-12-11 1987-12-11 Mehrspindelkopf mit Kühl- und Schmiermittelvorrichtung
DE3742094 1987-12-11

Publications (4)

Publication Number Publication Date
EP0319662A2 true EP0319662A2 (fr) 1989-06-14
EP0319662A3 EP0319662A3 (en) 1989-09-13
EP0319662B1 EP0319662B1 (fr) 1992-03-25
EP0319662B2 EP0319662B2 (fr) 1998-10-07

Family

ID=6342415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116257A Expired - Lifetime EP0319662B2 (fr) 1987-12-11 1988-09-30 Tête de broche

Country Status (5)

Country Link
EP (1) EP0319662B2 (fr)
AT (1) ATE74046T1 (fr)
DE (2) DE3742094C2 (fr)
ES (1) ES2029705T5 (fr)
GR (1) GR3004167T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443505A1 (fr) * 1990-02-21 1991-08-28 CEDIMA DIAMANTWERKZEUG- UND MASCHINENHANDELSGESELLSCHAFT mbH Dispositif de coupe ayant un système d'alimentation d'un agent de refroidissement pour une lame de scie
WO1996003252A1 (fr) * 1994-07-25 1996-02-08 Kennametal Inc. Porte-outil rotatif a systeme fixe d'alimentation de lubrifiant par le moyeu
FR2733927A1 (fr) * 1995-05-09 1996-11-15 Sauter Kg Feinmechanik Tete de broche
US6302004B1 (en) * 1999-03-12 2001-10-16 Aaron Gawain Taylor Method and apparatus for increasing the productivity of CNC machine tools
EP1254739A1 (fr) * 2001-05-02 2002-11-06 Sauter Feinmechanik GmbH Tête de broche pour outils
JP2016112657A (ja) * 2014-12-16 2016-06-23 ファナック株式会社 回転ジョイント支持構造部、工作機械の主軸および電動機

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022895A1 (de) * 1990-07-18 1992-01-23 Hellmerich Werkzeugmaschinen G Spindelkopfspeisung mit sogeffekt
DE4226922B4 (de) * 1992-08-14 2008-05-08 Küma Werkzeugmaschinenfabrik GmbH & Co KG Spindelkopf mit Anordnung zur Versorgung mit Kühl- und/oder Schmiermittel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH333276A (fr) * 1955-10-08 1958-10-15 Tornos Sa Fabrique De Machine Machine-outil comprenant un tambour-revolver
US3375742A (en) * 1966-06-22 1968-04-02 Monarch Machine Tool Co Turret mechanism
US3702740A (en) * 1970-04-13 1972-11-14 Rockwell Mfg Co Drill press with coolant means
DE2509532A1 (de) * 1974-03-08 1975-09-11 Mollart Eng Co Ltd Mehrfachspindeleinheit
DE3129403A1 (de) * 1981-07-25 1983-02-10 Komet Stahlhalter- Und Werkzeugfabrik Robert Breuning Gmbh, 7122 Besigheim Vorrichtung fuer die kuehlmittelzufuhr zu mit kuehlmittelkanaelen versehenen, rotierenden schneidwerkzeugen fuer die spanende metallverarbeitung, insbesondere bohrwerkzeugen.
DE3401079A1 (de) * 1984-01-13 1985-07-18 Brose Werkzeugmaschinen GmbH & Co KG, 8000 München Mehrspindelkopf mit integrierter kuehl- und schmiermittelversorgung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH333276A (fr) * 1955-10-08 1958-10-15 Tornos Sa Fabrique De Machine Machine-outil comprenant un tambour-revolver
US3375742A (en) * 1966-06-22 1968-04-02 Monarch Machine Tool Co Turret mechanism
US3702740A (en) * 1970-04-13 1972-11-14 Rockwell Mfg Co Drill press with coolant means
DE2509532A1 (de) * 1974-03-08 1975-09-11 Mollart Eng Co Ltd Mehrfachspindeleinheit
DE3129403A1 (de) * 1981-07-25 1983-02-10 Komet Stahlhalter- Und Werkzeugfabrik Robert Breuning Gmbh, 7122 Besigheim Vorrichtung fuer die kuehlmittelzufuhr zu mit kuehlmittelkanaelen versehenen, rotierenden schneidwerkzeugen fuer die spanende metallverarbeitung, insbesondere bohrwerkzeugen.
DE3401079A1 (de) * 1984-01-13 1985-07-18 Brose Werkzeugmaschinen GmbH & Co KG, 8000 München Mehrspindelkopf mit integrierter kuehl- und schmiermittelversorgung

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443505A1 (fr) * 1990-02-21 1991-08-28 CEDIMA DIAMANTWERKZEUG- UND MASCHINENHANDELSGESELLSCHAFT mbH Dispositif de coupe ayant un système d'alimentation d'un agent de refroidissement pour une lame de scie
WO1996003252A1 (fr) * 1994-07-25 1996-02-08 Kennametal Inc. Porte-outil rotatif a systeme fixe d'alimentation de lubrifiant par le moyeu
FR2733927A1 (fr) * 1995-05-09 1996-11-15 Sauter Kg Feinmechanik Tete de broche
US6302004B1 (en) * 1999-03-12 2001-10-16 Aaron Gawain Taylor Method and apparatus for increasing the productivity of CNC machine tools
EP1254739A1 (fr) * 2001-05-02 2002-11-06 Sauter Feinmechanik GmbH Tête de broche pour outils
JP2016112657A (ja) * 2014-12-16 2016-06-23 ファナック株式会社 回転ジョイント支持構造部、工作機械の主軸および電動機
US9700982B2 (en) 2014-12-16 2017-07-11 Fanuc Corporation Rotary joint support structure spindle of machine tool, and electric motor
DE102015121389B4 (de) * 2014-12-16 2020-12-17 Fanuc Corporation Drehverbindungs-Halteaufbau, Spindel für eine Werkzeugmaschine, und Elektromotor

Also Published As

Publication number Publication date
ES2029705T5 (es) 1999-02-16
GR3004167T3 (fr) 1993-03-31
EP0319662B2 (fr) 1998-10-07
ATE74046T1 (de) 1992-04-15
ES2029705T3 (es) 1992-09-01
DE3742094A1 (de) 1989-06-22
EP0319662B1 (fr) 1992-03-25
EP0319662A3 (en) 1989-09-13
DE3869572D1 (de) 1992-04-30
DE3742094C2 (de) 1995-09-14

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